Nut-lock



" CHARLES H. PRESTON, UF DETROIT, IlllCHlGAN.

-NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 279,182, dated June 12, 1883.

' K -I Application filedl)ecembe126,182. (Ifo model.)

To aZZ whom it may concern.:

Be it known that l, CnAnniss lvl. Pnns'roN, of Detroit, count y ot'\Vayne,a1`d Statcoi'Michigan, have invented an Improvement in Nut vide a simple and etticient device for preventbination with apeeuliarly-construeted nut, at-

Locks, ot'wln'ch the following is zi. speciiieut ion. The object of my improvement is to'proing bolt-nuts subjected to constant vibration or jarring from becoming loose; and my invention consists in the construction and application ot' a locking-sleeve, which, in comtains the desired object.

In the drawings which. form a part ol' this r specification, Figure l is a perspective view ot' a hexagonal nut locked in place bythe locking-sleeve. Fig. 2 is a plan view ot' a circular nut with circular lockin'gsleeve. Fig. ."3 is a i perspective view, showing` my nut-lock applied to the lock-nut ot'a .jam-nut. Fig. 4 is a vertical central section of Fig.` 3. Fig. 5 is a vertical section ofthe locking-sleeve used in Fig. 2.

ln the drawings, A is the bolt, upon which l the nut B is screwed in the usual manner. is a lockingsleeve, which is slipped over the nut B. The nut B is of usual construction, exeeptthat it is provided on its top l'ace, and l around its outer edge thereof, with a number of lugs, D, cast integral with the nut. 'The sleeve C is provided upon its lower edge with alug, E

In practice, after the nut B is screwed to place, a small hole is drilled into the bed upon which the nut rests, for the reception of the lug E, after which the sleeve C is slipped over the nut, with its lug E entering the hole drilled for Vit into the bed; and to hold the `sleeve (l now iirmlyin position one or more ofthe lugs l i are hammered over the top edge ol' the sleeve. To, allow this to be done the nut l is to be i made of malleable iron. To unlock the nut all there is to be done is to freethe sleeve (J from the bend over lug D, which may be si1nply broken ol'f, as there are a sufticicnt number of such lugs provided to allow o1' a rcpcated locking. My locking device is, however, peeuliaxlradapted to round nuts, asthe position ot' the hole for the reception ot' the lugd can then easily be determined and drilled before the nut is secured to-place. l construct the nut then as shown in Fig. 2, where F are a number ot' splineways cut into the periphery ot' the nut at equal distances apart. The sleeve. is then provided upon its inner face with a spline, (i, ol' proper size to tit any ot' the lil'ie splineways. The lug E may then be a eon tinuation ot' tpe spline, as shown in Fig. 5. A round nut con strueted with these splineways "un easily be screwed to place by a wrench made to iit its outcrshape.

.In Fig. 3 l have shown my locking device as applied to secure the lock-nut 'ot' a iam-nut in place. ll' the nuts are made round, then both have to be provided with correspoiuling splineways, and the sleeve extends the whole height ot"botl1 nuts,fand the lug E upon the under side may be omitted orbroken away, as it. is herrny at' no.partimllar Llue,as the ebject, is simply to lock the upper nut upon the lower. \\'ith hexagonalor other polygonal nuts no splincways are needed, and the top nutislike the one shown in Fig. while the lower nut may be an ordinary nut.

iis will be "seen, the spirit, ot' my invention is a locking-sleeve adapted lo interlock the nut with the bed, or, as in the case ot'jamnuts, to interlockithe top nut with the lower nut, in combination with vthe lugs E, adapted to secure the locking-sleeve in place.

lV hat l claim as my invention is* l. As a new article ot' manufacture., a loclknut consisting or" a malleable-iron nut provided on top with a number ot" lugs, and a lockingsleeve fitting over the nut and provided upon its lower i'aee with a projecting` lug, substantially as and t'or the purpose de scribed.

2. A malleable-imi] nut provided upon its top face, near the outer edge thereof, with a number ot lugs adapted` to hold a locking sleeve in posit-ion, substantially as described.

3. A. round nut provided upon its cylindrical face with a number ol' splineways at equal distances apart, and on top, andnear the outer edge thereof, with a number of lugs, in combination with a locking-slecve provided upon its inner face with a spline, sub- `sta-ntiall y as and for the purpose described. 

